Trying to find out what the the mid level exchanges for coins to get on and what are the conditions needed to get on them and how hard and competitive it is?
Ideas so far have included.
Hitbtc
Gdax
Kraken
Liqui
Any experience and knowledge first hand would be great appreciated.
For others, I agree that they are mid-level but not Kraken because that's one exchange that I see above others you have there. I have used HiBtc and they are quite cool. A lot of them use the voting system while they also make provision if you want to by-pass the voting system which is by paying certain amount of fees. This varies across the exchange sites you listed here.
The best source of information is to visit their sites and see the FAQ section where they would put details on how to add a coin and if you are not clear, there is sure a way to contact support in other to know much more information about how to go about listing in their platform.